Johan Bijnens
Professor, Deputy Head of Division
Masses, decay constants and electromagnetic form-factors with twisted boundary conditions
Author
Summary, in English
Using Chiral Perturbation Theory at one-loop we analyze the consequences of twisted boundary conditions. We point out that due to the broken Lorentz and reflection symmetry a number of unexpected terms show up in the expressions. We explicitly discuss the pseudo-scalar octet masses, axial-vector and pseudo-scalar decay constants and electromagnetic form-factors. We show how the Ward identities are satisfied using the momentum dependent masses and the non-zero vacuum-expectation-values values for the electromagnetic (vector) currents. Explicit expressions at one-loop are provided and an appendix discusses the needed one-loop twisted finite volume integrals.
Department/s
- Theoretical Particle Physics - Has been reorganised
Publishing year
2014
Language
English
Publication/Series
Journal of High Energy Physics
Issue
5
Document type
Journal article
Publisher
Springer
Topic
- Subatomic Physics
Keywords
- Lattice QCD
- Chiral Lagrangians
Status
Published
ISBN/ISSN/Other
- ISSN: 1029-8479